ASTROSAT CZTI

Data Quality Report

Orbit 28891

Creation date: 2024-06-27T19:57:39.440058
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_064T01_9000004144_28891cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28891cztM0_level2_quad_clean.evt
Size (bytes)720,803,52081,043,200
Size687.4 MB 77.3 MB
Events in quadrant A3,772,883518,601
Events in quadrant B3,430,014539,563
Events in quadrant C6,545,414482,283
Events in quadrant D7,644,335460,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152252
B0141112
C0240852
D0273032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6488410.631936%
B6488270.416153%
C64885608.631319%
D64884897.536991%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7818 6489 17 17 0.22% 0.26%
B 7818 6489 4 4 0.05% 0.06%
C 7818 6488 197 197 2.52% 3.04%
D 7818 6488 515 515 6.59% 7.94%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 6 16 479079 2815.14 854 840 169.9
A 13 254 10341 55.93 854 840 169.9
A 3 137 7750 40.68 854 840 169.9
B 10 245 57182 350.16 860 841 160.9
B 12 111 18889 112.17 860 841 160.9
B 11 111 17314 102.38 860 841 160.9
C 3 233 3135790 16773.27 813 821 186.9
C 14 238 149400 794.95 813 821 186.9
C 15 208 46038 241.93 813 821 186.9
D 8 195 3585946 18652.48 807 785 192.2
D 1 52 974878 5067.9 807 785 192.2
D 2 234 23676 119.09 807 785 192.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter